소아환자의 치과의사 복장에 대한 선호도 연구

위유민,이창섭,이상호 大韓小兒齒科學會 2002 大韓小兒齒科學會誌 Vol.29 No.2

어린이의 치과 치료시 행동조절에 도움이 되고자 치료를 위해 내원한 어린이 환자 150명을 대상으로 치과의사의 의상에 대해 설문조사를 시행한 결과 다음과 같은 결론을 얻었다. 1. 가운과 일상복에 대한 선호도 조사에서도 성별(P<0.05), 연령(P<0.05), 거주자(P<0.05), 내원 횟수(P<0.05)에서 가운데 대한 선호도(65.3%)가 높았다. 2. 가운의 종류와 가운의 속의 복장에 대한 선호도는 긴 가운에 와이셔츠(30.7%), 양복형 가운에 와이셔츠(18.7%), 긴 가운에 폴로셔츠(17.3%) 순으로 나타났다. 3. 가운의 색에 대한 선호도는 흰색(34.7%), 분홍색(18.7%), 초록색(18.0), 파랑색(15.3%), 노랑색(13.3%) 순으로 나타났다. 4. 가운의 무늬에 대한 선호도는 만화 캐릭터(49.3%), 병원로고(28.7%), 민무늬(14.7%) 순으로 나타났다. 5. 여자 치과의사의 일상복에 대한 선호도는 폴로셔츠(37.3%), 줄무늬셔츠(28.7%), 라운드티셔츠(18.7%), 개량한복(15.3%) 순으로 나타났다. 6. 남자 치과의사의 일상복에 대한 선호도순서는 무늬넥타이에 민무늬 와이셔츠(28.0%), 민무늬 넥타이에 와이셔츠와 넥타이 없이 무늬셔츠(21.3%), 넥타이 없이 민무늬 와이셔츠(14.7%) 순으로 나타나났다. 7. 보호장비 착용에 대한 선호도 조사는 마스크와 글러브(28.7%), 장비 없음(26.7%), 마스크와 글러브와 보안경(22.7%), 마스크만 착용(22.0%) 순으로 나타났다. 본 연구의 결과에 비추어 볼 때, 어린이 환자의 치과 치료시, 심리적 안정감을 주기 위해서는 흰색의 획일적인 가운에서 벗어나 다양한 색채와 형태로 디자인된 치과의사의 복장이 어린이에게 친근감을 주어 행동조절에 도움이 될 것으로 사료된다. The purpose of this study was to find a method for improving the children's behavior during dental treatment in relation with dentist's attire. For this study 150 children, visiting a dental clinic, were asked to participate in a survey on the attire of the dentist. The results of the survey were as follows: 1. In the survey for the preference between gown and ordinary clothes according to sex(P<0.05), age(P<0.05), residence(P<0.05), and number of visits(P<0.05), there was more preference for gown(65.3%). 2. The preference for the type of gown and attire under the gown was a long gown and white shirt (30.7%), followed by a suit-like gown (18.7%) and white shirt, and long gown and polo shirt(17.3%). 3. The preference for the color of gown was white(34.7%), followed by pink (18.7%), green(18.0%), blue(15.3%) and yellow(13.3%). 4. The preference for the pattern on the gown was cartoon characters(49.3%), followed by hospital lo-go(28.7%) and no pattern(14.7%). 5. The preference for ordinary clothes of female dentists was polo shirt(37.3%), followed by striped shirt(28.7%), round T-shirt(18.7%), and everyday Korean traditional dress(15.3%). 6. The preference for ordinary clothes of male dentists was pattern necktie and no pattern Y-shirt(28.0%), fol-lowed by no pattern necktie and Y-shirt(21.3%) or pattern shirt with no necktie, and no pattern Y-shirt with no necktie(14.7%). 7. The preference on the protective equipment worn was mask and glove(28.7%), followed by no protective equipment(26.7%), mask, glove and protective glasses(22.7%) and only mask(22.0%). Based on the above results, it seems that parting with the traditional white gown and wearing multi-color and pattern attire will provide psychological stability and help improve children's behavior during treatment.

완속기시(Soft-start)광조사 방식이 복합레진의 중합 및 수축응력에 미치는 효과

위유민,오유향,이난영,이창섭,이상호 大韓小兒齒科學會 2005 大韓小兒齒科學會誌 Vol.32 No.2

본 연구에서는 기존의 할로겐 광중합기를 이용하여 40초간 조사하여 복합레진을 중합한 경우와 플라즈마 광중합기를 이용한 고강도의 중합 및 완속기시 중합 방식, 그리고 LED 광중합기를 이용한 통법의 중합과 완속기시 중합 방식으로 복합레진을 중합하여 발생되는 수축응력을 비교하고 미세경도를 측정하여 중합도를 평가하였다. 내경 7mm, 외경 10mm의 아크릴릭 주형을 제작하고 외면에 스트레인게이지를 부착 시킨 뒤 각각의 광원에 따른 중합모드로 광중합 하였다. 광조사 시점부터 1초 간격으로 600초간 수축응력을 측정하였으며, 중합 24시간 후 각 군의 미세경도를 측정하여 통계 분석하였다. 수축응력 측정 후 시편을 종단하여 주사전자현미경으로 레진수복물과 아크릴릭 주형 계면을 관찰하였다. 이상의 실험을 통해 얻은 결과는 다음과 같다. 1. 플라즈마 광과 LED 광원의 완속기시 중합방식은 각각의 기본 중합방식에 비해 중함 10분 후에 수축응력 감소를 보였다(P<0.05). 2. 완속기시 중합방식의 플라즈마 광이 가장 낮은 수축응력을 보였으나 미세경도 또한 가장 낮았다(P<0.05). 3. 완속기시 중합방식의 LED 광중합은 기존의 할로겐 광과 LED 광중합 방법에 비하여 낮은 수축응력을 보였다(P<0.05). 4. 완속기시 중하장식의 LED 광으로 조사한 시편의 미세경도는 단일광도로 조사한 할로겐 광과 LED 광중합과 비교하여 유의할만한 차이가 나타나지 않았다(P>0.05). 5. 기존의 할로겐 장과 완속기시 중합방식의 LED로 중합한 시편이 플라즈마 광과 단일강도의 LED로 조사한 군보다 더 나은 번연봉쇄를 보였다. The purpose of this study was to evaluate the influence of soft-start light curing on contraction stress and hardness of composite resin. Composite resin mold was cured using the one-step continuous curing method with three difference light sources; conventional halogen light curing for 40 seconds at 400 mw/㎠, plasma arc light curing for 6 seconds at 1300 mW/㎠ and LED light curing for 10 seconds at 700 mW/㎠. For the soft-start curing method 2 seconds light exposure at 650 mW/㎠ followed by 3 seconds at 1300 mW/㎠ and exponential increase with 5 seconds followed by 10 seconds at 700 mW/㎠ were used. Contraction stress was measured using strain gauge method and Vickers hardness was measured 24 hours after polymerization at the top and bottom of specimens. Resin-acrylic interfaces were observed using a scanning electron micro scope(SEM). The results of present study can be summarized as follows: 1. Contraction stresses at 10 min after polymerization were significantly reduced with the soft-start curing both in plasma and LED light sources(P<0.05). 2. Plasma light curing with soft-start resulted in not only the lowest contraction stress, but also the lowest hardness (P<0.05). 3. LED light curing with soft-start showed lower contraction stress than the one-step continuous halogen and LED light curing(P<0.05). 4. Micro hardness of specimens cured by LED light with soft-start was equivalent to that of cured by the one-step continuous halogen and LED light(P>0.05). 5. Curing by LED light with soft-start and conventional halogen light resulted in better marginal sealing than plasma light and one-step LED light curing.

상아질 형성 부전증에 대한 증례보고

김희진 ( Hee Jin Kim ) , 위유민 ( You Min Wee ) , 박성규 ( Seong Kyu Park ) , 홍성수 ( Seong Soo Hong ) , 조태식 ( Tae Sik Cho ) , 이상호 ( Sang Ho Lee ) 조선대학교 구강생물학연구소 2002 Oral Biology Research (Oral Biol Res) Vol.26 No.2

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기능적 방법을 이용한 소아의 하악과두 골절의 처치; 증례 보고

이정하 ( Jung Ha Lee ) , 박성규 ( Seong Kye Park ) , 위유민 ( You Min Wee ) , 정현구 ( Hyun Ku Jung ) , 이봉규 ( Bong Kye Lee ) , 이창섭 ( Chang Seop Lee ) 조선대학교 구강생물학연구소 2002 Oral Biology Research (Oral Biol Res) Vol.26 No.2

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The Smad4/PTEN Expression Pattern Predicts Clinical Outcomes in Colorectal Adenocarcinoma

정유민,위영찬,김예슬,방성식,양정호,장기석,민경환,백승삼 대한병리학회 2018 Journal of Pathology and Translational Medicine Vol.52 No.1

Background: Smad4 and PTEN are prognostic indicators for various tumor types. Smad4 regulates tumor suppression, whereas PTEN inhibits cell proliferation. We analyzed and compared the performance of Smad4 and PTEN for predicting the prognosis of patients with colorectal adenocarcinoma. Methods: Combined expression patterns based on Smad4+/– and PTEN+/– status were evaluated by immunostaining using a tissue microarray of colorectal adenocarcinoma. The relationships between the protein expression and clinicopathological variables were analyzed. Results: Smad4–/PTEN– status was most frequently observed in metastatic adenocarcinoma, followed by primary adenocarcinoma and tubular adenoma (p < .001). When Smad4–/PTEN– and Smad4+/PTEN+ groups were compared, Smad4–/PTEN– status was associated with high N stage (p = .018) and defective mismatch repair proteins (p = .006). Significant differences in disease-free survival and overall survival were observed among the three groups (Smad4+/PTEN+, Smad4–/PTEN+ or Smad4+/PTEN–, and Smad4–/PTEN–) (all p < .05). Conclusions: Concurrent loss of Smad4 and PTEN may lead to more aggressive disease and poor prognosis in patients with colorectal adenocarcinoma compared to the loss of Smad4 or PTEN alone.

상아질 형성 부전증에 대한 증례보고

김희진,위유민,박성규,홍성수,조태식,이상호 조선대학교 구강생물학연구소 2002 口腔生物學硏究 Vol.26 No.2

Dentinogenesis imperfecta is an inherited disorder of dentin formation, usually exhibiting an autosomal dominant mode of transmission. Type Ⅰdentinogenesis imperfects occurs in Patients afflicted with osteogenesis imperfecta. Type Ⅱdentinogenesis imperfecta is not associated with osteogenesis imperfects. Type Ⅲ dentinogenesis imperfecta (Brandywine type) occurs in a racial isolate area in the state of Maryland. Clinically, the color of teeth may range from a gray to brownish violet or yellowish brown with translucent or opalescent hue. The enamel often chips and fractures away, allowing speedy attrition of the remaining, poorly calcified. softer dentin. Roentgenographic features include pulpal obliteration, bulbous crowns and short and blunted roots. The cementum, periodontal membrane and the supporting bone appear normal

Clinicopathologic Correlations of E-cadherin and Prrx-1 Expression Loss in Hepatocellular Carcinoma

이기종,김현성,정유민,안혜인,심종민,위영찬,표주연,송영수,백승삼,오영하 대한병리학회 2016 Journal of Pathology and Translational Medicine Vol.50 No.5

Background: Developing predictive markers for hepatocellular carcinoma (HCC) is important, because many patients experience recurrence and metastasis. Epithelial to mesenchymal transition (EMT) is a developmental process that plays an important role during embryogenesis and also during cancer metastasis. Paired-related homeobox protein 1 (Prrx-1) is an EMT inducer that has recently been introduced, and its prognostic significance in HCC is largely unknown. Methods: Tissue microarray was constructed using surgically resected primary HCCs from 244 cases. Immunohistochemical staining of E-cadherin and Prrx-1 was performed. The correlation between Ecadherin loss and Prrx-1 expression, as well as other clinicopathologic factors, was evaluated. Results: E-cadherin expression was decreased in 96 cases (39.4%). Loss of E-cadherin correlated with a higher recurrence rate (p < .001) but was not correlated with patient’s survival. Thirty-two cases (13.3%) showed at least focal nuclear Prrx-1 immunoreactivity while all non-neoplastic livers (n = 22) were negative. Prrx-1 expression was not associated with E-cadherin loss, survival or recurrence rates, pathologic factors, or the Ki-67 labeling index. Twenty tumors that were positive for E-cadherin and Prrx-1 had significantly higher nuclear grades than the rest of the cohort (p = .037). In Cox proportional hazard models, E-cadherin loss and large vessel invasion were independent prognostic factors for shorter disease-free survival. Cirrhosis and high Ki-67 index (>40%) were independent prognostic factors for shorter overall survival. Conclusions: Prrx-1 was expressed in small portions of HCCs but not in normal livers. Additional studies with a large number of Prrx-1-positive cases are required to confirm the results of this study.

기능적 방법을 이용한 소아의 하악과두 골절의 처치 : 증례 보고 A case report

이정하,박성규,위유민,정현구,이봉규,이창섭 조선대학교 구강생물학연구소 2002 Oral Biology Research (Oral Biol Res) Vol.26 No.2

The pediatric condylar fracture occurs very frequently in the mandible, but this injury is occasionally ignored due to difficulty of diagnosis and no cooperation of patient. The adequate initial diagnosis and active treatment must be performed because delayed and improper treatment lead to possible severe complication such as TMJ ankylosis and retardation of mandibular development. Most pediatric condylar fracture is mainly performed by the conservative or functional treatment. but it may be required open reduction according to cases. In this study, Activator is applied for functional treatment of pediatric condylar fracture and fair recovery of jaw function is acquired.

고정성 Resin-bonded bridge를 이용한 상실된 유전치부의 심미 수복 : 증례보고 Case reports

박인천,박성규,위유민,이봉규,김효석,이상호 조선대학교 구강생물학연구소 2002 口腔生物學硏究 Vol.26 No.2

Today's parents are quite conscious of the esthetic and Potential psychological consequences of missing anterior teeth. Premature lobs of Primary incisors usually dose not require the Placement appliances for space maintenance because no mesial movement of the adjacent teeth is normally expected when the canines have already erupted. However, replacement of anterior teeth may be indicated for esthetic purposes or possibly to facilitate normal pronunciation. The treatment options in these cases are removable maintainers of space or fixed partial dentures, the former being most often used. When no cooperation on the part of the patient for their used or when the devices provoke discomfort or atypical glutition, fixed partial dentures may be used, taking into consideration premaxillary growth.

Enamel matrix derivative(EMDOGAIN^(R))을 이용한 상악 소구치의 자가이식 치험례

오유향,김효식,정현구,조태식,위유민,이창섭 조선대학교 구강생물학연구소 2002 Oral Biology Research (Oral Biol Res) Vol.26 No.2

The success of tooth transplantation or replantation depends on the viability of periodontal ligament in the transplanted tooth. Mechanical injury to periodontal tissues frequently results in dental root resorption and ankylosis, which leads to the failure of transplantation or replantation. Enamel matrix derivative (EMD) has been recently used to induce periodontal regeneration. In this report, we show a clinical case of EMD application in the transplantation of an inversely impacted and immature tooth. An impacted second premolar was found in the right maxilla of a 14 year-old girl. The tooth was inversely impacted and the root formation was incomplete. When transplantation was carried out. EMD was applied to the periodontal tissues of the extracted premolar. The tooth was fixed at the correct position and the clinical condition was followed for evaluation for 3 months. Radiographs after 3 months exhibited new bone formation surrounding the transplanted tooth. There were no signs of root resorption or ankylosis, and reconstruction of the bone defect area at the maxilla was also found. Short-term results from this case indicated that EMD application was effective in the transplantation of an inversely impacted and immature tooth. In adddition, EMD might contribute to obtain good healing without ankylosis. Further follow-up observations are necessary to evaluate the regenerative effects of EMD.